The clear round flat bottom embossed glass vessel sink features a round shape with ripple textured bowl and a swirl pattern down the sides. The bowl of the sink is smooth, but the pattern can be felt on the exterior. Each clear glass vessel sink is made of high-quality tempered glass, which does create a faint greenish-blue coloration. We recommend that you also purchase a drain with your glass bathroom sink bowl in the same finish of your faucet. As this sink has a relatively flat bottom, it can be installed with or without a mounting ring. PLEASE NOTE: the bottom of this sink is relatively flat compared to round bowl vessel sinks, but it does not sit completely flat on a counter. It has a small slope toward the drain on the outside, which almost gives the sink the appearance of floating on a vanity.